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Bobbin Winder - Brother 888X62 Series Service Manual

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Adjustment
[Standard]
• The thread should be wound parallel to the bobbin.
• The bobbin winding quantity should be filling 80 to 90% of the diameter.
[Adjustment]
1. When the front cover assy and the rear cover assy are removed, attach them.
2. Set the empty bobbin to the machine, and perform the bobbin winding. And check the
condition of the bobbin winding.
3. Loosen the screw of the thread guide assy.
4. Move the thread guide assy up and down to adjust the bobbin winding so that the thread is wound parallel to
the bobbin.
*Key point
• When uneven bobbin winding is the upper side, move the thread guide assy downward. (Fig. 1 "a")
• When uneven bobbin winding is the lower side, move the thread guide assy upward. (Fig. 1 "b")
5. Tighten the screw of the thread guide assy to secure the thread guide assy.
NG
a
b
Fig. 1
Taptite, Cup P M4X20
6. Loosen the screw of the bobbin presser.
7. Turn the bobbin presser left and right to adjust the bobbin winding quantity.
8. Tighten the screw of the bobbin presser to secure the bobbin presser.
Screwdriver
Bobbin presser
Screw
Taptite, Pan P (S/P W) 3X14

Bobbin winder

OK
Front side view
3 - 25
Screw
*Key point
• Adjust within this area.
Bobbin
Thread
Thread guide assy
b
a
Screwdriver
80 - 90%

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